Mercurial > hg > octave-lyh
annotate scripts/time/datetick.m @ 14552:86854d032a37
maint: miscellaneous style fixes for .m files
* audio/mu2lin.m, deprecated/cut.m, general/cplxpair.m,
general/genvarname.m, geometry/rectint.m, help/gen_doc_cache.m,
image/hsv2rgb.m, image/rainbow.m, io/textscan.m,
miscellaneous/bzip2.m, miscellaneous/compare_versions.m,
miscellaneous/fact.m, miscellaneous/menu.m, optimization/fminbnd.m,
optimization/fminunc.m, optimization/fzero.m, optimization/sqp.m,
plot/__gnuplot_drawnow__.m, plot/axis.m, plot/findobj.m,
plot/legend.m, plot/peaks.m, plot/private/__errplot__.m,
plot/private/__fltk_print__.m, plot/private/__go_draw_axes__.m,
plot/private/__patch__.m, polynomial/pchip.m, polynomial/residue.m,
signal/periodogram.m, sparse/sprandsym.m, statistics/base/moment.m,
statistics/distributions/expcdf.m, statistics/distributions/expinv.m,
statistics/distributions/exppdf.m, statistics/tests/prop_test_2.m,
statistics/tests/sign_test.m, statistics/tests/t_test.m,
statistics/tests/t_test_2.m, statistics/tests/t_test_regression.m,
strings/regexptranslate.m, time/datetick.m:
Style fixes.
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Wed, 11 Apr 2012 22:07:00 -0400 |
| parents | f3d52523cde1 |
| children | 4f458e882516 |
| rev | line source |
|---|---|
|
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1 ## Copyright (C) 2008-2012 David Bateman |
| 8112 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7 ## the Free Software Foundation; either version 3 of the License, or (at | |
| 8 ## your option) any later version. | |
| 9 ## | |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 16 ## along with Octave; see the file COPYING. If not, see | |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 18 | |
| 19 ## -*- texinfo -*- | |
|
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20 ## @deftypefn {Function File} {} datetick () |
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21 ## @deftypefnx {Function File} {} datetick (@var{form}) |
| 8112 | 22 ## @deftypefnx {Function File} {} datetick (@var{axis}, @var{form}) |
| 23 ## @deftypefnx {Function File} {} datetick (@dots{}, "keeplimits") | |
| 24 ## @deftypefnx {Function File} {} datetick (@dots{}, "keepticks") | |
| 25 ## @deftypefnx {Function File} {} datetick (@dots{ax}, @dots{}) | |
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26 ## Add date formatted tick labels to an axis. The axis the apply the |
| 8112 | 27 ## ticks to is determined by @var{axis} that can take the values "x", |
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28 ## "y" or "z". The default value is "x". The formatting of the labels is |
| 8112 | 29 ## determined by the variable @var{form}, that can either be a string in |
| 30 ## the format needed by @code{dateform}, or a positive integer that can | |
| 31 ## be accepted by @code{datestr}. | |
| 32 ## @seealso{datenum, datestr} | |
| 33 ## @end deftypefn | |
| 34 | |
| 35 function datetick (varargin) | |
| 36 | |
| 37 [h, varargin, nargin] = __plt_get_axis_arg__ ("datetick", varargin{:}); | |
| 38 | |
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39 oldh = gca (); |
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40 unwind_protect |
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41 axes (h); |
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42 __datetick__ (varargin{:}); |
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43 unwind_protect_cleanup |
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44 axes (oldh); |
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45 end_unwind_protect |
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46 |
| 8112 | 47 endfunction |
| 48 | |
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49 |
| 8112 | 50 %!demo |
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51 %! clf; |
| 8112 | 52 %! yr = 1900:10:2000; |
| 53 %! pop = [76.094, 92.407, 106.461, 123.077 131.954, 151.868, 179.979, ... | |
| 54 %! 203.984, 227.225, 249.623, 282.224]; | |
| 55 %! plot (datenum (yr, 1, 1), pop); | |
| 56 %! title ("US population (millions)"); | |
| 57 %! xlabel ("Year"); | |
| 58 %! datetick ("x", "YYYY"); | |
| 59 | |
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60 %!demo |
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61 %! clf; |
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62 %! yr = 1988:2:2002; |
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63 %! yr = datenum (yr,1,1); |
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64 %! pr = [12.1 13.3 12.6 13.1 13.3 14.1 14.4 15.2]; |
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65 %! plot (yr, pr); |
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66 %! xlabel ("year"); |
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67 %! ylabel ("average price"); |
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68 %! ax = gca; |
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69 %! set (ax, "xtick", datenum (1990:5:2005,1,1)); |
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70 %! datetick (2, "keepticks"); |
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71 %! set (ax, "ytick", 12:16); |
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72 |
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73 ## Remove from test statistics. No real tests possible. |
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74 %!assert (1) |
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75 |
| 8112 | 76 function __datetick__ (varargin) |
| 77 | |
| 78 keeplimits = false; | |
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79 keepticks = false; |
| 8112 | 80 idx = []; |
| 81 for i = 1 : nargin | |
| 82 arg = varargin {i}; | |
| 83 if (ischar (arg)) | |
| 84 if (strcmpi (arg, "keeplimits")) | |
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85 keeplimits = true; |
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86 idx = [idx, i]; |
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87 elseif (strcmpi (arg, "keepticks")) |
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88 keepticks = true; |
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89 idx = [idx, i]; |
| 8112 | 90 endif |
| 91 endif | |
| 92 endfor | |
| 93 | |
| 94 varargin(idx) = []; | |
| 95 nargin = length (varargin); | |
| 96 form = []; | |
| 97 ax = "x"; | |
| 98 | |
| 99 if (nargin != 0) | |
| 100 arg = varargin{1}; | |
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101 if (ischar (arg) && (strcmp (arg, "x") || strcmp (arg, "y") |
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102 || strcmp (arg, "z"))) |
| 8112 | 103 ax = arg; |
| 104 if (nargin > 1) | |
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105 form = varargin{2}; |
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106 varargin(1:2) = []; |
| 8112 | 107 else |
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108 varargin(1) = []; |
| 8112 | 109 endif |
| 110 else | |
| 111 form = arg; | |
| 112 varargin(1) = []; | |
| 113 endif | |
| 114 endif | |
| 115 | |
| 116 ## Don't publish the existence of this variable for use with dateaxis | |
| 117 if (length (varargin) > 0) | |
| 118 startdate = varargin{1}; | |
| 119 else | |
| 120 startdate = []; | |
| 121 endif | |
| 122 | |
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123 if (! isempty (form)) |
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124 if (isnumeric (form)) |
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125 if (! isscalar (form) || floor (form) != form || form < 0) |
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126 error ("datetick: expecting FORM argument to be a positive integer"); |
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127 endif |
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128 elseif (! ischar (form)) |
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129 error ("datetick: expecting valid date format string"); |
| 8112 | 130 endif |
| 131 endif | |
| 132 | |
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133 if (keepticks) |
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134 ticks = get (gca (), strcat (ax, "tick")); |
| 8112 | 135 else |
| 136 ## Need to do our own axis tick position calculation as | |
| 137 ## year, etc, don't fallback on nice datenum values. | |
| 138 objs = findall (gca()); | |
| 139 xmax = NaN; | |
| 140 xmin = NaN; | |
| 141 for i = 1 : length (objs) | |
| 142 fld = get (objs (i)); | |
| 143 if (isfield (fld, strcat (ax, "data"))) | |
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144 xdata = getfield (fld, strcat (ax, "data"))(:); |
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145 xmin = min (xmin, min (xdata)); |
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146 xmax = max (xmax, max (xdata)); |
| 8112 | 147 endif |
| 148 endfor | |
| 149 | |
| 150 if (isnan (xmin) || isnan (xmax)) | |
| 151 xmin = 0; | |
| 152 xmax = 1; | |
| 153 elseif (xmin == xmax) | |
| 154 xmax = xmin + 1; | |
| 155 endif | |
| 156 | |
| 157 N = 3; | |
| 158 if (xmax - xmin < N) | |
| 159 ## Day scale or less | |
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160 if (xmax - xmin < N / 24 / 60 / 60) |
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161 scl = 1 / 24 / 60 / 60; |
| 8112 | 162 elseif (xmax - xmin < N / 24 / 6) |
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163 scl = 1 / 24 / 60; |
| 8112 | 164 else |
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165 scl = 1 / 24; |
| 8112 | 166 endif |
| 167 sep = __calc_tick_sep__ (xmin / scl , xmax / scl); | |
| 168 xmin = sep * floor (xmin / scl / sep); | |
| 169 xmax = sep * ceil (xmax / scl / sep); | |
| 170 nticks = (xmax - xmin) / sep + 1; | |
| 171 xmin *= scl; | |
| 172 xmax *= scl; | |
| 173 else | |
| 174 [ymin, mmin, dmin] = datevec (xmin); | |
| 175 [ymax, mmax, dmax] = datevec (xmax); | |
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176 minyear = ymin + (mmin - 1) / 12 + (dmin - 1) / 12 / 30; |
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177 maxyear = ymax + (mmax - 1) / 12 + (dmax - 1) / 12 / 30; |
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178 minmonth = mmin + (dmin - 1) / 30; |
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179 maxmonth = (ymax - ymin) * 12 + mmax + (dmax - 1) / 30; |
| 8112 | 180 |
| 181 if (maxmonth - minmonth < N) | |
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182 sep = __calc_tick_sep__ (xmin, xmax); |
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183 xmin = sep * floor (xmin / sep); |
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184 xmax = sep * ceil (xmax / sep); |
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185 nticks = (xmax - xmin) / sep + 1; |
| 8112 | 186 elseif (maxyear - minyear < N) |
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187 sep = __calc_tick_sep__ (minmonth , maxmonth); |
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188 xmin = datenum (ymin, sep * floor (minmonth / sep), 1); |
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189 xmax = datenum (ymin, sep * ceil (maxmonth / sep), 1); |
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190 nticks = ceil (maxmonth / sep) - floor (minmonth / sep) + 1; |
| 8112 | 191 else |
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192 sep = __calc_tick_sep__ (minyear , maxyear); |
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193 xmin = datenum (sep * floor (minyear / sep), 1, 1); |
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194 xmax = datenum (sep * ceil (maxyear / sep), 1, 1); |
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195 nticks = ceil (maxyear / sep) - floor (minyear / sep) + 1; |
| 8112 | 196 endif |
| 197 endif | |
| 198 ticks = xmin + [0 : nticks - 1] / (nticks - 1) * (xmax - xmin); | |
| 199 endif | |
| 200 | |
| 201 if (isempty (form)) | |
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202 r = max (ticks) - min (ticks); |
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203 if (r < 10/60/24) |
| 8112 | 204 ## minutes and seconds |
| 205 form = 13; | |
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206 elseif (r < 2) |
| 8112 | 207 ## hours |
| 208 form = 15; | |
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209 elseif (r < 15) |
| 8112 | 210 ## days |
| 211 form = 8; | |
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212 elseif (r < 365) |
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213 ## FIXME -- FORM should be 19 for European users who use dd/mm |
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214 ## instead of mm/dd. How can that be determined automatically? |
| 8112 | 215 ## months |
| 216 form = 6; | |
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217 elseif (r < 90*12) |
| 8112 | 218 ## quarters |
| 219 form = 27; | |
| 220 else | |
| 221 ## years | |
| 222 form = 10; | |
| 223 endif | |
| 224 endif | |
| 225 | |
| 226 if (length (ticks) == 6) | |
| 227 ## Careful that its not treated as a datevec | |
| 228 if (! isempty (startdate)) | |
| 229 sticks = strvcat (datestr (ticks(1:end-1) - ticks(1) + startdate, form), | |
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230 datestr (ticks(end) - ticks(1) + startdate, form)); |
| 8112 | 231 else |
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232 sticks = strvcat (datestr (ticks(1:end-1), form), |
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233 datestr (ticks(end), form)); |
| 8112 | 234 endif |
| 235 else | |
| 236 if (! isempty (startdate)) | |
| 237 sticks = datestr (ticks - ticks(1) + startdate, form); | |
| 238 else | |
| 239 sticks = datestr (ticks, form); | |
| 240 endif | |
| 241 endif | |
| 242 | |
| 243 sticks = mat2cell (sticks, ones (rows (sticks), 1), columns (sticks)); | |
| 244 | |
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245 if (keepticks) |
| 8112 | 246 if (keeplimits) |
| 247 set (gca(), strcat (ax, "ticklabel"), sticks); | |
| 248 else | |
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249 set (gca(), strcat (ax, "ticklabel"), sticks, strcat (ax, "lim"), |
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250 [min(ticks), max(ticks)]); |
| 8112 | 251 endif |
| 252 else | |
| 253 if (keeplimits) | |
| 254 set (gca(), strcat (ax, "tick"), ticks, strcat (ax, "ticklabel"), sticks); | |
| 255 else | |
| 256 set (gca(), strcat (ax, "tick"), ticks, strcat (ax, "ticklabel"), sticks, | |
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257 strcat (ax, "lim"), [min(ticks), max(ticks)]); |
| 8112 | 258 endif |
| 259 endif | |
| 260 endfunction | |
| 261 | |
| 262 function [a, b] = __magform__ (x) | |
| 263 if (x == 0) | |
| 264 a = 0; | |
| 265 b = 0; | |
| 266 else | |
| 267 l = log10 (abs (x)); | |
| 268 r = fmod (l, 1); | |
| 269 a = 10 .^ r; | |
| 270 b = fix (l - r); | |
| 271 if (a < 1) | |
| 272 a *= 10; | |
| 273 b -= 1; | |
| 274 endif | |
| 275 if (x < 0) | |
| 276 a = -a; | |
| 277 endif | |
| 278 endif | |
| 279 endfunction | |
| 280 | |
| 281 ## A translation from Tom Holoryd's python code at | |
| 282 ## http://kurage.nimh.nih.gov/tomh/tics.py | |
| 283 function sep = __calc_tick_sep__ (lo, hi) | |
| 284 persistent sqrt_2 = sqrt (2.0); | |
| 285 persistent sqrt_10 = sqrt (10.0); | |
| 286 persistent sqrt_50 = sqrt (50.0); | |
| 287 | |
| 288 ticint = 5; | |
| 289 | |
| 290 ## Reference: Lewart, C. R., "Algorithms SCALE1, SCALE2, and | |
| 291 ## SCALE3 for Determination of Scales on Computer Generated | |
| 292 ## Plots", Communications of the ACM, 10 (1973), 639-640. | |
| 293 ## Also cited as ACM Algorithm 463. | |
| 294 | |
| 295 [a, b] = __magform__ ((hi - lo) / ticint); | |
| 296 | |
| 297 if (a < sqrt_2) | |
| 298 x = 1; | |
| 299 elseif (a < sqrt_10) | |
| 300 x = 2; | |
| 301 elseif (a < sqrt_50) | |
| 302 x = 5; | |
| 303 else | |
| 304 x = 10; | |
| 305 endif | |
| 306 sep = x * 10 .^ b; | |
| 307 endfunction | |
| 308 |